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Recommended by holistic veterinarians, Jing Tang Guan Zhong San is a Traditional Chinese Veterinary Medicine (TCVM) herbal formula that supports the body's natural ability to remove unfriendly GI bugs in dogs, cats, and horses. Based on Guan Zhong San from Yuan Heng Liao Ma Ji (Yuan-heng's Therapeutic Treatise of Horses, 1608), written by Yu Benyuan and Yu Benheng, this five-herb classical formula combines herbs with a long history of use in Chinese medicine for supporting a healthy GI environment, pairing the namesake chief herb Guan Zhong (Dryopteris rhizome) with potent GI-supporting herbs (Ku Lian Pi, He Shi), a mild Spleen-tonifying and GI-supporting herb (Shi Jun Zi), and a GI and respiratory-supporting herb (Bai Bu) to address unfriendly GI bug patterns in the gastrointestinal tract. Available in standard powder and standard capsules. Stop administration immediately if the patient develops diarrhea, vomiting, or other unusual signs; resume only after consulting with a veterinarian. Keep away from children. May be used for up to 3 months, or as directed by your veterinarian. Dosing varies by species and body weight; your authorizing veterinarian will provide specific guidance.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
600g Powder - Dogs and Cats: 0.5g per 10 to 20 lbs of body weight, twice daily, or as directed by your veterinarian. One large level scoop holds approximately 7g; one small level scoop holds approximately 2g.
600g Powder - Horses: 10 to 20g twice daily as a top dressing on feed, or as directed by your veterinarian. One large level scoop holds approximately 7g; one small level scoop holds approximately 2g.
0.5g Capsules - Dogs and Cats: One 0.5g capsule per 10 to 20 lbs of body weight, twice daily, or as directed by your veterinarian.
Note: Guan Zhong San is a standard (non-concentrated) formula; doses are higher than concentrated Jing Tang formulas. Stop administration immediately if the patient develops diarrhea, vomiting, or other unusual signs; resume only after consulting with a veterinarian. May be used for up to 3 months, or as directed by your veterinarian. Your authorizing veterinarian will confirm the appropriate dose and duration for your pet.
Active ingredients: Bai Bu (Stemona sessilifolia), Stemona root; Guan Zhong (Dryopteris crassirhizoma), Dryopteris rhizome; He Shi (Carpesium abrotanoides), Carpesium fruit; Ku Lian Pi (Melia toosendan), Melia root bark; Shi Jun Zi (Quisqualis indica), Quisqualis fruit.
Inactive ingredients: Standard capsules contain bovine gelatin. Standard powder contains no inactive ingredients.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Guan Zhong San is a five-herb classical formula combining a Heat-clearing and toxin-resolving chief herb (Guan Zhong), potent GI-supporting herbs (Ku Lian Pi, He Shi), a mild Spleen-tonifying and GI-supporting herb (Shi Jun Zi), and a GI and respiratory-supporting herb (Bai Bu):
Guan Zhong San contains potent GI-supporting herbs including Guan Zhong (Dryopteris rhizome), Ku Lian Pi (Melia root bark), and He Shi (Carpesium fruit), alongside milder GI-supporting and Qi-tonifying herbs including Shi Jun Zi (Quisqualis fruit) and Bai Bu (Stemona root), which may interact with gastrointestinal medications, immune-modulating drugs, and other concurrently administered preparations. Stop administration immediately if the patient develops diarrhea, vomiting, or other unusual signs; resume only after consulting with a veterinarian. Keep away from children. Pets on prescription medications should use this formula under veterinary supervision, as herb-drug interaction research in dogs, cats, and horses remains limited.
Medication categories warranting extra caution include gastrointestinal medications, immunosuppressive medications, and pets managing multiple concurrent prescriptions. May be used for up to 3 months, or as directed by your veterinarian. Your veterinarian can determine appropriateness based on your pet's condition, current medications, and laboratory results.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Guan Zhong San is indicated for dogs, cats, and horses where the veterinarian has identified a need to support the body's natural ability to remove unfriendly GI bugs and maintain a healthy gastrointestinal environment. Holistic veterinarians prescribe it as part of a comprehensive TCVM GI support protocol. No contraindications are listed for this formula, but stop administration immediately if the patient develops diarrhea, vomiting, or other unusual signs and resume only after consulting with a veterinarian. Your authorizing veterinarian will confirm the appropriate TCVM pattern and protocol before recommending Guan Zhong San.
Dosing varies by species and body weight; your authorizing veterinarian will provide specific guidance. For dogs and cats using the 0.5g capsule format, the guideline is one capsule per 10 to 20 lbs of body weight twice daily, or as directed by your veterinarian. For dogs and cats using the 600g powder, the dose is 0.5g per 10 to 20 lbs of body weight twice daily, or as directed by your veterinarian; the large scoop holds approximately 7g and the small scoop holds approximately 2g. For horses, the standard dose is 10 to 20g twice daily as a top dressing on feed, or as directed by your veterinarian. Note that Guan Zhong San is a standard (non-concentrated) formula; doses are higher than concentrated Jing Tang formulas. Stop administration immediately if the patient develops diarrhea, vomiting, or other unusual signs. May be used for up to 3 months, or as directed by your veterinarian.
Yuan Heng Liao Ma Ji (Yuan-heng's Therapeutic Treatise of Horses) is one of the most important classical texts in traditional Chinese veterinary medicine, written by Yu Benyuan and Yu Benheng in 1608 during the Ming dynasty. Guan Zhong San was originally formulated for horses experiencing GI imbalance patterns, reflecting the text's focus on equine veterinary medicine. In modern TCVM practice, the formula has been adapted for use in dogs and cats as well, reflecting the broader application of classical equine formulas across companion animal species when the underlying TCVM pattern and indication are the same.
Guan Zhong San contains several potent classical herbs, including Ku Lian Pi (Melia root bark) and Guan Zhong (Dryopteris rhizome), that are intended for use in animals under veterinary supervision and are not appropriate for unsupervised human use, particularly by children. The manufacturer's warning to keep this formula away from children reflects standard safety practice for veterinary herbal preparations containing potent herbs. This formula is formulated and dosed specifically for dogs, cats, and horses under the guidance of a licensed veterinarian.
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